Results 51 to 60 of about 1,971 (197)
Gemmological samples: rock crystal from two localities in the Rhodopes, Bulgaria
Historia Naturalis Bulgarica, 2019 The paper comprises gemmological and other data on several specimens of faceted rock crystal gemstones from two localities in the Madan ore field, Smolyan Province, and Krumovgrad Municipality, Kardzhali Province, of the Rhodopes, Bulgaria.
Stanislav Abadjiev
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This study provides a comprehensive analysis of gemstones, focusing on their geological formation, exploration, mining practices, and socioeconomic and ethical issues surrounding the industry.
Ricardo Valls
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, 2012 The distinctive appearance of gemstones is caused by the way light reflects and refracts multiple times inside of them. The goal of this thesis is to design and implement an application for photorealistic rendering of gems.
Krtek, Lukáš
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Fingerprinting of ruby and sapphire gemstones through Fourier-transform infrared (FTIR) methodologies [PDF]
European Journal of MineralogyGemstones have significant economic, cultural, and artistic value. Advances in the treatment and production of synthetic gemstones create the need for more precise identification methods to distinguish natural stones from their synthetic and treated ...
A. Soares de Sousa +4 more
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Most-Cherished Gemstones in the Medieval Arab World
, 2017 In the medieval Arab world, gemstones were used as ornaments, set in jewellery, seals, and amulets, and also were investments and status symbols. As a result of the Arab conquests and their access to new regions, the distribution and use of gemstones ...
ZOHAR AMAR, EFRAIM LEV
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Geology and Economic Potential of Manawaji and Environs, Gulani Area, Upper Benue Trough, Nigeria
UMYU Scientifica JournalUnderstanding the geology of an area is vital for assessing its economic potential. This study evaluates the lithology and economic significance of rocks around Manawaji, Upper Benue Trough, northeastern Nigeria.
Abdulbari Dandashire Saleh +10 more
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In-situ discrimination of gemstones using semi quantitative analysis based on libs-pca method [PDF]
, 2023 Laser-induced breakdown spectroscopy (LIBS) is a flexible non-destructive method for qualitative and quantitative analysis. It has its advantages for in-situ elemental analysis applicable to any material. LIBS system was optimized with fundamental 1064nm
Mohamad Saufi, Noradilah
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, 2022 Laser-Induced Breakdown Spectroscopy (LIBS) is a very simple but capable spectroscopic analytical method that performs simultaneous multi-element analysis in a single laser shot.
Zamira, Ain +5 more
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Introdução aos territórios produtores de gemas: o caso brasileiro do nordeste de Minas Gerais
ConfinsThe purpose of this chronicle is to present activities and actors involved in gemstone exploitation in the Northeastern part of the brazilian state of Minas Gerais. Considered to be one of the largest precious stones reserve in the world, the area offers
Aurélien Reys
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, 2022 Gilgit-Baltistan possesses a complex history of crustal evolution and rich diversity of geological environments, and is favorable for various types of mineralization and production of gemstone all over GB. Two batholiths; Kohistan Batholith and Karakorum
Alam, Muhammad +4 more
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